Home tour: various locations, 830-798-2266, www.hillcountrybuilders.org. The Hill Country Builders Association's tour will feature nine homes by a variety of builders. Homes featured are valued from $350,000 to $1 million. $Tickets cost 10 for a weekend, $15 for all event days. 10 a.m.-6 p.m. Continues Saturday-Oct. 20 and Oct. 25-27.

Tree course: University Presbyterian Church, SoL Center, 300 Bushnell Ave., 210-732-9927, www.upcsa.org/sol_center. Botanist and author Paul Cox will present “Trees of San Antonio and South Central Texas.” The course focuses on oaks, pines and palms grown in the area. $45 for three sessions. 9 a.m.-noon. Friday and Oct. 25 and Nov. 1.

Saturday

Herb market: Pearl Brewery, Pearl Parkway and Avenue A, 866-923-2226, www.sanantonioherbmarket.org. The event offers seminars and talks, with many focusing on the herb of the year, elder. 9 a.m.-3 p.m.

Garden festival: Herff Farm at the Cibolo, 33 Herff Road, Boerne, 830-249-4616, www.cibolo.org. Area gardening experts will lead a series of workshops for creating and maintaining a productive vegetable garden. Topics will include making a garden bed, drip irrigation, worm composting, natural pest control and fertilizing. 10 a.m.-1 p.m. Free.

Email event notices to hgcalendar@
express-news.net at least three weeks before the event.